/Engine/Source/Editor/SequencerCore/Public/MVVM/Views/SKeyNavigationButtons.h
typedef TBaseDelegate_TwoParams< void, [FFrameTime](API\Runtime\Core\Misc\FFrameTime), [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FViewModel](API\Editor\SequencerCore\MVVM\ViewModels\FViewModel) > > FOnAddKey